42320403 has 6 divisors (see below), whose sum is σ = 61129484. Its totient is φ = 28213596.

The previous prime is 42320401. The next prime is 42320419. The reversal of 42320403 is 30402324.

It is not a de Polignac number, because 42320403 - 2¹ = 42320401 is a prime.

It is a super-3 number, since 3×42320403³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42320401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2351125 + ... + 2351142.

Almost surely, 2^42320403 is an apocalyptic number.

42320403 is a deficient number, since it is larger than the sum of its proper divisors (18809081).

42320403 is a wasteful number, since it uses less digits than its factorization.

42320403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4702273 (or 4702270 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 42320403 is about 6505.4133611939. The cubic root of 42320403 is about 348.4843384775.

Adding to 42320403 its reverse (30402324), we get a palindrome (72722727).

The spelling of 42320403 in words is "forty-two million, three hundred twenty thousand, four hundred three".